iOS開發之壓縮與解壓文件

ziparchive是基於開源代碼”MiniZip”的zip壓縮與解壓的Objective-C 的Class,使用起來非常的簡單
方法：從http://code.google.com/p/ziparchive/ 上下載ZipArchive.zip，解壓后將代碼加入工程中，並且把zlib庫添加到工程中
使用方法：
1. 壓縮:ZipArchive可以壓縮多個文件,只需要把文件一一addFileToZip即可.

ZipArchive* zip = [[ZipArchive alloc] init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentpath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
NSString* l_zipfile = [documentpath stringByAppendingString:@"/test.zip"] ;
          
NSString* image1 = [documentpath stringByAppendingString:@"/image1.jpg"] ;   
NSString* image2 = [documentpath stringByAppendingString:@"/image2.jpg"] ;       
          
BOOL ret = [zip CreateZipFile2:l_zipfile];
ret = [zip addFileToZip:image1 newname:@"image1.jpg"];
ret = [zip addFileToZip:image2 newname:@"image2.jpg"];
if( ![zip CloseZipFile2] )
  {
     l_zipfile = @"";
  }
[zip release];

2. 解壓縮:

ZipArchive* zip = [[ZipArchive alloc] init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentpath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
          
NSString* l_zipfile = [documentpath stringByAppendingString:@"/test.zip"] ;
NSString* unzipto = [documentpath stringByAppendingString:@"/test"] ;
if( [zip UnzipOpenFile:l_zipfile] )
 {
   BOOL ret = [zip UnzipFileTo:unzipto overWrite:YES];
   if( NO==ret )
   {
   }
   [zip UnzipCloseFile];
 }
[zip release];